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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Kernel#warn" do
before :each do
@before_verbose = $VERBOSE
@before_separator = $/
end
after :each do
$VERBOSE = @before_verbose
$/ = @before_separator
end
it "is a private method" do
Kernel.should have_private_instance_method(:warn)
end
it "requires multiple arguments" do
Kernel.method(:warn).arity.should < 0
end
it "does not append line-end if last character is line-end" do
lambda {
$VERBOSE = true
warn("this is some simple text with line-end\n")
}.should output(nil, "this is some simple text with line-end\n")
end
it "calls #write on $stderr if $VERBOSE is true" do
lambda {
$VERBOSE = true
warn("this is some simple text")
}.should output(nil, "this is some simple text\n")
end
it "calls #write on $stderr if $VERBOSE is false" do
lambda {
$VERBOSE = false
warn("this is some simple text")
}.should output(nil, "this is some simple text\n")
end
it "does not call #write on $stderr if $VERBOSE is nil" do
lambda {
$VERBOSE = nil
warn("this is some simple text")
}.should output(nil, "")
end
it "writes each argument on a line when passed multiple arguments" do
lambda {
$VERBOSE = true
warn("line 1", "line 2")
}.should output(nil, "line 1\nline 2\n")
end
it "writes each array element on a line when passes an array" do
lambda {
$VERBOSE = true
warn(["line 1", "line 2"])
}.should output(nil, "line 1\nline 2\n")
end
it "does not write strings when passed no arguments" do
lambda {
$VERBOSE = true
warn
}.should output("", "")
end
it "writes the default record separator and NOT $/ to $stderr after the warning message" do
lambda {
$VERBOSE = true
$/ = 'rs'
warn("")
}.should output(nil, /\n/)
end
end
|
